Molding-machine.



- NO- 896,626. PATENTED AUG. 18, 1908.

H. L. CRISP. 6 MOLDING MACHINE.

APPLICATION FILED OUT. 761907.

2 SHEETS-SHEET 1.

Flyi- PATENTED AUG; 18, 1908.

H. L CRISP. MOLDING MACHINE.

' APPLICATION FILED OCT. 7, 1907.

' 2 SHEETSSHEET 2 UNITED STATES PATENT OFFICE.

HOWARD L. CRISP, OF RELAY, MARYLAND, ASSIGNOR OF ONE-FOURTH TO ERNEST.

H. BRINKLEY AND ONE-FOURTH TO HARRY J. PATTERSON, OF COLLEGE PARK,

MARYLAND.

MOLD ING-MACHINE Application filed October 7, 1907.

Specification of Letters Patent.

T 0 all whom it may concern:

Be it known that I, HOWARD L. ORIsP, a resident of Relay, in the county of Baltimore and State of Maryland, have invented certain new and useful Improvements in Molding-Machines, of which the following is a specification.

The general object of this invention is to provide a machine for facilitating the formation of sand molds and the manipulation of the flasks after the molds have been formed.

One feature of the invention is the adaptability of the machine to flasks or molds varying in size, and to the formation of molds either in conjugation with a stripping plate or without the same, dependent upon the condition of the sand and the character of the mold being formed.

A further feature is the match-board movable through a vertically open machine frame, and when raised adapted to support a flask above the frame and sustain the entire weight thereof while the sand is filled in and rammed, the frame intercepting the downward movement of the flask so that the match-board may lower and completely withdraw the patterns.

A further feature is the disappearing gate pattern operating in connection with the stripping plate and the depressible matchboard, whereby after the flask has been rammed and the match-board lowered, the gate pattern drops so that the flask may be slid or rolled laterally as may be most convenient in removing it from the machine, it being unnecessary to lift the same in order to clear the gate attern.

The invention a so includes a match-board carrier of improved construction, together with improved means for moving it vertically and for guiding it in such movement; also improved means for securing the matchboard to the carrier.

A further feature is a laterally extending flask support or shelf arranged at one side of the machine and adapted at either end to be lowered to form an inclined slide-way for the flasks, the support also being adapted to be turned laterally when thus lowered so that the downwardly sliding flasks may be directed toward any desired point, thus avoiding the usual manual lifting thereof.

With these objects in view, the invention consists in the novel features of construction and in the combination of parts, hereinafter fully described and claimed, and illustrated by the accompanying drawings, wherein:

Figure 1 is a side elevation of the improved machine, with the mold forming mechanism raised. Fig. 2 is a vertical longitudinal sectional view of the machine, showing the mechanism lowered. Fig. 3 is a top plan view with the mechanism in lowered position and with the flasks and one of the strippingplates removed. Fig. 4 is a side elevation of the machine when used without a strippingplate illustrating the manipulation of the flasks when removing them from the machine; Fig. 5 is a vertical cross-sectional view taken on line 55 of Fig. 1, and Fig. 6 is a similar view on line 66 of Fig. 2. Fig. 7 is a view similar to Fig. 6, illustrating the arrangement of the parts when operating without a stripping-plate, and Fig. 8 is a longitudinal sectional view of a portion of the mechanism, taken on line 88 of Fig. 7. Figs. 9, 10 and 11 are detail views of the match-board securing devices. Figs. 12 and 13 are detail views of the gate pattern, and Fig. 14 is a detail of the frame adjustment.

Referring to the drawings, the longitudinal sides 2 of the machine frame are secured together by the end members 3 and clamping rods 4. On the top edges of sides 2 are the laterally adjustable strips 2, secured by clamping bolts 5 operating in the horizontally slotted brackets 6. Strips 2' are adjustable so that match-boards of different widths may' be used when operating without a stripping-plate, as will presently appear. and rising thereabove are the four angle bars 7 which may be secured to ends 3 and form a vertical passageway for the matchboard carrier. This carrier is preferably formed in two parts, each having the parallel side members 8 tied. together by transverse strips 8. The carrier-parts are arranged endto end, and their combined areas correspond to the space inclosed by guides 7, so that the carrier has no lateral play while moving vertically. The carrier parts rest on horizontal lifting bars 9, which are pivoted to the free ends of the vertically swinging arms 10 secured to transverse shafts 11 journaled in sides 2, with one of said shafts provided with the long operating lever 12. As arms 10 raise and lower, the constantly horizontal lifting-bars 9 slide in angle bars 8 of the carrier parts, thus rais- Within this open-top frame disengagement or tipping of the latter.

13 are the matchboards, two being here shown, and each provided on its bottom with cleats 13 which rest on carrier, being secured thereto in manner presently to be described. The match-boards carry patterns 14 which form the molding depressions, in the adaptation here shown one being for the cope and the other for the drag.

When operating with a stripping plate 15, the latter is of suflicient width to have its opposite edges rest on the top strips 2 of the frame and sustain flask 16 while the match-board lowers between the frame sides and withdraws the patterns from the sand. When operating without the stripping plate, top edges 2 of the frame sides are adjusted to accurately fit the match-boards so that as the latter move downward therebetween the opposite sides of each flask engage and rest on said strips, thus arresting the down ward movement of the flask while the matchboards continue to lower and withdraw the patterns.

In the mold-forming operation, the carrier is raised, as in Figs. 1 and 5, and supports the match-boards and flasks, also the strippingplates if in use, wholly above the machine frame, so that the whole weight of each flask is on the match-board when the sand is being fllled in and rammed and prevents danger of the parts separating, as might occur if the flask were supported at such time by the machine frame. Obviously, such separation would result in an imperfect mold.

The gate-forming pattern 17, located at one end of patterns 14', is thicker than stripping-plate 15 and is movable vertically in a cavity formed therein, so that when the match-board is in engagement with the stripping-plate, as when the mechanism is in raised position, the gate pattern is lifted above the top surface of the plate and forms a corresponding gate depression 17 in the sand. But when the stripping-plate rests on the frame and the match-board lowers, the gate pattern drops, with its lower portion 17 projected beneath the plate. With the gate pattern thus withdrawn from the sand, the flask may slide laterally or be tipped or rocked on one edge, as may be most convenient in removing it, it being unnecessary to lift the flask vertically to free it from the gate pattern. The manipulation of the flask is thereby rendered easy and there is no danger of injuring the molded cavity. It will be understood that the gate-cavity is formed in the lower or drag portion of the flask, while a pin the ends of the frame.

or plug 19 in the cope forms the usual pouring hole.

The match-board carrier is preferably formed in two parts, as thereby it may be more readily adapted for match-boards vary ing in size. For securing the match-boards thereto, short plates or strips 20 are secured to the under face of the cleats 13 and adapted to enter beneath one of the transverse strips 8 connecting carrier bars 8, while projecting from the other cleat 13 are similar plates or strips 23, notched on their inner edges at 23. With the match-board in position, strips 23 are engaged by the clip-like frame 24 slidable on bars 8, and carrying the vertically movable latch 25 which when raised is adapted to pass inward over projections 23 and then lower into engagement with notches 23. The locking means so secures the carrier and match-boards that there is no danger of the boards becoming disengaged which might otherwise be occasioned by the jarring incident to ramming sand in the flask.

On the side of the frame opposite lever 12 are the two brackets 26, hinged to swing horizontally, being preferably arranged adjacent Resting loosely in these brackets is the trough or channel-like support 27 upon which the flasks are adapted to be turned on edge, the manipulation thereas of being easily accomplished by simply a rolling or tipping movement of the flask from its position on top of the frame and without injury to the molded cavities. Either end of support 27 may be rested on the ground or 109 casting floor, with the support turned outwardly on the hinged bracket sustaining its upper end so that the flask may slide down onto the casting floor. This support and the forming of a slideway avoids much lifting and carrying of the heavy flasks which would otherwise be necessary.

The improved machine may be employed in the formation of a great variety of molds which may differ widely in length and width. 110 And while here shown equipped for forming both the cope and drag, it is obvious that it may be used for only one of said parts. And as it may be operated either with or without a stripping-plate, its range of usefulness and adaptability to various kinds of work is still further extended.

I claim 1. A molding machine comprising an opentop frame adapted to support a flask, a 129 match-board movable vertically in the frame and when raised adapted to support the flask clear of the frame and when depressed adapted to separate from the flask with the latter supported by the frame, and means for moving the match-board.

2. A molding machine comprising an opentop frame adapted to support a flask, a carrier and means for moving the carrier vertically in the frame and above the same, and a 130 match-board operated by the carrier to lift the flask from the frame when in raised position and when lowered adapted to separate the match-board from the flask with the latter resting on the frame.

3. A molding machine comprising an open top frame adapted to support a flask, a carrier movable vertically within the frame and means for moving the carrier, and a matchboard movably secured to the carrier when the latter is elevated to raise the flask above the frame and when lowered adapted to be separated from the flask with the latter resting on the frame.

4. A molding machine comprising a vertically open frame having its opposite sides adjustable laterally and adapted to support a flask, and a match-board movable vertically in the frame and above the same and when elevated supporting the flask clear of the frame and when lowered adapted. to separate from the flask with the latter supported by the frame.

5. A molding machine comprising an open top frame, a match-board movable vertically through the open top frame and abovethe same, a stripping plate supported by the frame and raised therefrom by the upward movement of the match-board and repositioned on the frame by the downward movement of said board, and a flask resting on and raised and lowered by the stripping plate.

6. A molding machine comprising an opentop frame adapted to support a flask, a match-board movable vertically within the frame, vertical guides in the frame, a carrier for the match-board movable between the guides, vertically swinging mechanism for raising and lowering the carrier, and a horizontally sliding connection between the raising and lowering means and the carrier.

7. A molding machine comprising an opentop frame adapted tosupport a flask, four vertical guides in the frame, a carrier movable vertically between the guides, horizontal members paralleling the carrier and having longitudinally sliding connection therewith, vertically swinging supports pivotally connected to said members, and a matchboard adapted to be raised and lowered by the carrier.

8. A molding machine comprising an opentop rectangular frame adapted to support a flask, four upright guides secured in the frame, a carrier fitted between the guides and movable vertically, the carrier consisting in part of parallel side bars, carrier-sustaining means consisting of bars paralleling and having sliding engagement with the sidebars of the carrier, vertically swinging supports pivotally connected to carrier-sustaining bars, and a match-board adapted to be raised and lowered by the carrier.

9. In a molding machine, a stripping plate having pattern passages therethrough and also formed with a cavity communicating with said passages, a gate pattern movable vertically within said cavity and depending beneath the stripping plate and operating to raise the gate pattern, and patterns projected by the match-board through the strippingplate-passages.

10. A molding machine comprising an open-top rectangular frame adapted to support flasks, vertical guides in the frame formmg a guideway, a carrier fitting the guideway and means for raising and lowering the carrier, the carrier being in two parts with the combined area of the parts corresponding to the area of the guideway, and matchboards adapted to raise and lower with the carrier parts.

11. A molding machine comprising an open-top frame adapted to support flasks, vertical guides in the frame forming a guide way, a carrier adapted to raise and lower in the guideway, the carrier being in two parts the combined area of which corresponds to the space bound by the guides, each carrier part having parallel side bars which are in line withthe corresponding bars of the other carrier part, horizontal bars slidably engaging said alined carrier bars and of such length as to be in engagement with both carrier parts, vertically swinging members pivotally secured to said horizontal bars, and matchboards adapted to be raised and lowered by the carrier parts.

12. In a molding machine, a stripping plate having pattern passages, and also formed with a top cavity communicating with the passages with a portion of the cavity open through the bottom of the stripping plate, a gate pattern within the cavity beneath the top plane of the stripping plate and depending beneath the latter, a vertically movable match-board adapted to bear upwardly against the stripping plate and raise the gate pattern above the top plane of the latter, and patterns projected by the matchboard through the stripping-plate-passages.

13. In a molding machine the combination with a vertically movable match-board having lateral projections at its ends, of a carrier for raising and lowering the match board, and securing devices on the carrier adapted to engage said lateral projections.

14. In a molding machine, the combination with a match-board having lateral projections at opposite sides, of a support, a member fixed to the support adapted to be engaged by and hold the projections at one side of the match-board, and a securing deviceimovable on the support and adapted to engage the projections on the opposite side of the match-board.

15. In a molding machine, the combination with a match-board having lateral projections at one side thereof, of a match-board support, and a securing device slidable on the support and adapted to interlock with the said projections.

16. In a molding machine, the combination with a match-board having lateral projections, of a match-board support, a device slid able on the support, and a vertically movable latch on said device adapted to engage said lateral projections.

17. An improved molding machine comprising a match-board, a flask, and a gate pattern moved to and from molding position by the match-board.

18. An improved molding machine comprising a match-board, a flask, a strippingplate interposed between the match-board and flask, and a gate pattern carried by and movable vertically in the stripping-plate and adapted to be raised by the match-board above the stripping-plate.

19. An improved molding machine comprising a match-board, a'flask, a strippingplate interposed between the match-board and flask and provided with a gate pattern cavity, a gate pattern movable vertically in the cavity and when raised adapted to project above the stripping-plate and when lowered depending beneath the same and adapted to be engaged by the match-board, and means for lowering the match-board from the stripping-plate.

20. A molding machine comprising a match-board, a flask, a stripping-plate interposed between the match-board and flask and having a gate pattern cavity, a gate pattern movable vertically in the cavity and when raised adapted to project above the strippingplate and when lowered depending beneath the same for engagement with the match board, and means for vertically moving the match-board.

21. The combination with a molding machine adapted on its top surface to support a flask, of a flask support extending along one side of the machine and upon which the flasks may be turned on edge.

22. The combination with a molding machine adapted on its top surface to support a flask, of a support extending along one side of the machine and at its ends movably secured thereto, whereby either end of the support may be lowered to form an inclined slideway for flasks placed thereon.

23. The combination with a molding machine adapted on its top surface to support a flask, of brackets pivoted to one side of the machine, and a support extending along one side of the machine and removably sustained by the brackets, whereby either-end of the support may be lowered and the support thus inclined turned outward to form a slide- Way for the flask.

24. The combination with a molding machine adapted to support a flask, of a normally horizontal support movably mounted on the machine and adapted to be placed in inclined position to form a slideway for the flask.

In testimony whereof I affix my signature in presence of'two witnesses.

HOWARD L. CRISP.

Witnesses:

W. HAMPTON HIoKEY, J. DALLAS ERVIN. 

